2008 Harley-Davidson FLHX problems & reliability
30 owner complaints filed with NHTSA for the 2008 Harley-Davidson FLHX, alongside 2 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (1 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Service Brakes | 9 | 30% |
| Electrical System | 6 | 20% |
| Vehicle Speed Control | 5 | 17% |
| Engine | 4 | 13% |
| Power Train | 4 | 13% |
| Fuel/propulsion System | 2 | 7% |
| Unknown OR Other | 2 | 7% |
| Wheels | 2 | 7% |
| Electronic Stability Control (esc) | 1 | 3% |
| Exterior Lighting | 1 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 16 reported components →Mileage when problems occurred
Among the 23 complaints that included a usable odometer reading, the median reported incident mileage was 24,000 miles (middle 50% between 10,500 and 31,568 miles).
Complaints by incident year
What owners report
“after Harley Davidson performed the recall, the brakes are now lock up due to deposits in brake hydraulic control unit making the motorcycle unsafe to ride. they are stating this is not part of the recall, in the first paragraph of the recall it states that that is the problem that happens from the defective brake…”
Service Brakes · filed Apr 2, 2026
“I hit my brakes and I felt the abs system kick in and after I let off the brakes the next time I attempted to use the rear brake the pedal was extremely hard to push and I had no braking power on the rear of the motorcycle.”
Service Brakes · filed Jan 17, 2023
“ABS Module failed causing loss of all brakes on motorcycle. Brakes were working. Brought cycle to Harley Dealer for brake fluid flush as part of recall. Upon mechanic using Digitech to perform service it caused ABS module to fail. Because of failure motorcycle was left with zero brakes. Had to pay out of pocket for…”
Electrical System · filed Jul 7, 2021
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Sudden Brake Failure - Motorcycle
Preliminary Evaluation PE16009 · opened Jul 6, 2016 · closed Apr 23, 2018 · led to recall 18V076000
- MOTORCYCLE STALLING
Preliminary Evaluation PE08043 · opened Jul 17, 2008 · closed Aug 8, 2008 · led to recall 08V357000
Technical service bulletins
13 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2008 Harley-Davidson FLHX. The 10 most recent:
SERVICE BULLETIN M1684: MARKET SPECIFIC BATTERY INTRODUCTION. PURPOSE: Initial Release. This bulletin informs dealers of the availability of new batteries for new Original Equipment (OE) vehicle production and in the…
M1684 · Service Bulletin/Repair Instructions · issued Aug 16, 2025
SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft Drive Gear Retention Kit and service…
M1650 · Service Bulletin/Repair Instructions · issued Jan 24, 2025
SERVICE BULLETIN M1555 (REV E): BATTERY WARRANTY GUIDELINES. PURPOSE: Revision E. Added: Added procedures for the DCA-8000 E Battery Tester.* Updated: All sections. This bulletin informs the dealership network that…
M1555 · Warranty Program/Extension · issued Sep 12, 2024
SERVICE BULLETIN M1490 (V 24.8.8): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II). DIGITAL…
M1490 · Service Bulletin/Repair Instructions · issued Aug 8, 2024
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1158: OIL FILTER PACKAGING AND CASE QUANTITY UPDATE. PURPOSE: To inform dealerships that Harley-Davidson has made updates to oil filters including new part numbers…
PAB1158 · Service Bulletin/Repair Instructions · issued Jul 10, 2024
SERVICE BULLETIN M1490 (V 24.6.4): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II)…
M1490 · Service Bulletin/Repair Instructions · issued May 1, 2024
SERVICE BULLETIN M1612 (REV A): MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: Revision. Update: Notes for Table 3 and 4. * Updated: Part Numbers. This bulletin informs dealers that all: Twin Cam gear…
M1612 · Service Bulletin/Repair Instructions · issued Apr 4, 2024
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1146: 68193-95 BULB WEDGE, FENDER TIP LAMP. Purpose: To inform dealers of an issue with the bulb wire terminals not being to specification. The light bulbs were used…
PAB1146 · Service Bulletin/Repair Instructions · issued Dec 21, 2023
SERVICE BULLETIN M1612: MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: This bulletin informs dealers that all: â ¢ Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and â ¢…
M1612 · Service Bulletin/Repair Instructions · issued Dec 4, 2023
SERVICE BULLETIN M1612: MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: This bulletin informs dealers that all: â ¢ Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and â ¢…
M1612 · Service Bulletin/Repair Instructions · issued Dec 4, 2023
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2008 Harley-Davidson FLHX has 2 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2008 Harley-Davidson FLHX?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 24,000 miles. This does not predict when a particular vehicle will develop a problem.